He held out a shaking hand for a low five and she slapped it weakly.

Awww, so cute!

He caught Sarah staring, and she shot him an entreating look. He sighed, pushing the goggles to the top of his head and giving the scan a better look. He smiled. John's excitement doubled.

Oh, this is lovely—my favorite one. I love how much these lines say about Sarah, John, and Sherlock that Sarah wordlessly communicates with Sherlock, who obeys her and can so affect John’s mood. They’re such a great team. Love it. :)